Power-fan



(No Model.)

B. D. GREEN. POWER FAN.

No. 466,783. Patented Jan. 12, 1892.

wa es.- Mea an UNITED STATES PATENT OFFICE.

EDWARD D. GREEN, OF CHICAGO, ILLINOIS.

POWER-FAN.

SPECIFICATION forming part of Letters Patent No. 466,783, dated January12,1892.

Application filed February 27, 1891- Serial No. 383,043. (No model.)

To aZZ whom it may concern.-

Be it known that I, EDWARD D. GREEN, a citizen of the United States ofAmerica, residing at Chicago, in the county of Cook and State ofIllinois, have invented certain new and useful Improvements inPower-Fans, of which the following is a specification.

My invention relates to a power-fan designed to create a current of airor to supply air under moderate pressure where large quantities arerequired. It consists in certain improvements fully described andclaimed below, by which greater efficiency is obtained and also themanufacture of such fans rendered simple and easy.

While my improvements are made with especial reference to fans, they mayalso be utilized in propellers or wind or Water motors by removing theencircling cylinder.

My invention is illustrated by means of two figures upon the oppositepage, in which Figure 1 is an end View of my improved fan in itspreferred form, and Fig. 2 is an axial section of the same.

In the figures, A is an encircling cylinder ierving to confine the airwithin reach of the ans.

B is a shaft mounted in suitable bearings in said cylinder and providedwith means for rotating it.

C and O are collars upon the shaft, made rigid therewith by means ofset-screws c c, which collars serve as hubs upon which fans D D aremounted and adjusted to the proper angle. The fans D are arranged midwaybetween the fans 1) and cut into the columns of air coming from saidfans. It is possible to thus arrange thefans by the use of a single hub;but it is much preferable to have separate hubs, as shown, and to adjustthe two wheels after they are made. This enables the fans to be adaptedto various uses and saves much care and painstaking'in the manufactureof the wheels.

I claim as new and desire to secure by Letters Patent-- The combination,with a shaft, of two fanwheels, each having a series of fans arranged inplanes oblique to the axis of the shaft and adapted to drive the air inthe same direction, said fan-wheels being adj ustably mounted upon theshaft, whereby the relative positions of the fans on one wheel withrespect to those on the other may be varied as desired, substantially asdescribed.

EDWARD D. GREEN. Witnesses:

GEO. A. J ACKSON, H. BITNERJ

